function handleLoginButton() {
    let email = document.getElementById("login_email").value;
    let password = document.getElementById("login_password").value;
    let reg = /^([\w\d\.\-]+)@([\w\d\-]+\.[a-zA-Z]+)+$/g;

    if(reg.test(email) && password == "88888888"){
        window.location.href = "personal_information.html";
    }
}
